In the video, she said the newly released animated video would help open up the conversation about mental health, saying: "It helps us all talk about our mental health, what to say and who to talk to when we have feelings that are too big to manage on our own, and how to listen and help if one of our friends is finding things difficult."

A patron of the campaign, Kate also wrote an introduction in a leaflet to help parents and carers talk about mental health.

In the pamphlet, she said: "As parents, we all want our children to have the best possible start in life.

"Encouraging children to understand and be open about their feelings can give them the skills to cope with the ups and downs that life will throw at them as they grow up.